Regression: ps2mouse not working in 2.6.34

Regression: ps2mouse not working in 2.6.34

[Mark Lord]

Okay, who broke it, and how do I re-enable it?

The PS/2 mice on my systems here don't do anything with 2.6.34.
One system complains that I need to boot with i8042.nopnp to enable it,
which I also tried, but still nogo.  Same behaviour with or without
/dev/psaux enabled.  64-bit kernel.

The other system, running older userspace, hangs at the X-server startup
because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.

Both systems working fine with older kernels.
Google finds lots of other people discovering the same problem.

What gives?

Re: Regression: ps2mouse not working in 2.6.34

[Dmitry Torokhov]

On Mon, Jun 28, 2010 at 12:04:46PM -0400, Mark Lord wrote:
> Okay, who broke it, and how do I re-enable it?
> 
> The PS/2 mice on my systems here don't do anything with 2.6.34.
> One system complains that I need to boot with i8042.nopnp to enable it,
> which I also tried, but still nogo.  Same behaviour with or without
> /dev/psaux enabled.  64-bit kernel.
> 
> The other system, running older userspace, hangs at the X-server startup
> because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.
> 
> Both systems working fine with older kernels.
> Google finds lots of other people discovering the same problem.
> 
> What gives?
> 

Well, lest start small: did it work ifor you with 2.6.33? Does kernel
discover AUX serio port (dmesg)? What about the mouse itself? Is it
absent or is it not reporting events?

Thanks.

-- 
Dmitry

Re: Regression: ps2mouse not working in 2.6.34

[Mark Lord]

On 28/06/10 12:04 PM, Mark Lord wrote:
> Okay, who broke it, and how do I re-enable it?
>
> The PS/2 mice on my systems here don't do anything with 2.6.34.
> One system complains that I need to boot with i8042.nopnp to enable it,
> which I also tried, but still nogo. Same behaviour with or without
> /dev/psaux enabled. 64-bit kernel.
>
> The other system, running older userspace, hangs at the X-server startup
> because it cannot find the mouse. No i8042 warnings. 32-bit kernel.
>
> Both systems working fine with older kernels.
> Google finds lots of other people discovering the same problem.
>
> What gives?
..

Mmmm.. the problem started for some people with 2.6.32:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/587134

That thread has a suggestion that perhaps
    "the kernel fails to properly set the power settings for the PS2 port"

Whatever that means.  :)

Re: Regression: ps2mouse not working in 2.6.34

[Dmitry Torokhov]

On Mon, Jun 28, 2010 at 12:34:30PM -0400, Mark Lord wrote:
> On 28/06/10 12:04 PM, Mark Lord wrote:
> >Okay, who broke it, and how do I re-enable it?
> >
> >The PS/2 mice on my systems here don't do anything with 2.6.34.
> >One system complains that I need to boot with i8042.nopnp to enable it,
> >which I also tried, but still nogo. Same behaviour with or without
> >/dev/psaux enabled. 64-bit kernel.
> >
> >The other system, running older userspace, hangs at the X-server startup
> >because it cannot find the mouse. No i8042 warnings. 32-bit kernel.
> >
> >Both systems working fine with older kernels.
> >Google finds lots of other people discovering the same problem.
> >
> >What gives?
> ..
> 
> Mmmm.. the problem started for some people with 2.6.32:
> 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/587134

When did it start for _you_? I really do not know what kernel and
patches are in Lucid so I'd much more prefer knowing the vanilla kernel
version - I could at least see what has been changed there.

Are you also using USB-to-PS/2 converter?

Probably if you boot with i8042.debug and post full dmesg we coudl see
what is going on there...

> 
> That thread has a suggestion that perhaps
>    "the kernel fails to properly set the power settings for the PS2 port"
> 
> Whatever that means.  :)

I have no idea either.

-- 
Dmitry

Re: Regression: ps2mouse not working in 2.6.34

[Mark Lord]

On 28/06/10 12:33 PM, Dmitry Torokhov wrote:
> On Mon, Jun 28, 2010 at 12:04:46PM -0400, Mark Lord wrote:
>> Okay, who broke it, and how do I re-enable it?
>>
>> The PS/2 mice on my systems here don't do anything with 2.6.34.
>> One system complains that I need to boot with i8042.nopnp to enable it,
>> which I also tried, but still nogo.  Same behaviour with or without
>> /dev/psaux enabled.  64-bit kernel.
>>
>> The other system, running older userspace, hangs at the X-server startup
>> because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.
>>
>> Both systems working fine with older kernels.
>> Google finds lots of other people discovering the same problem.
>>
>> What gives?
>>
>
> Well, lest start small: did it work ifor you with 2.6.33? Does kernel
> discover AUX serio port (dmesg)? What about the mouse itself? Is it
> absent or is it not reporting events?
..

I started by crawling into the wire nest under the table.  :)

After a certain amount of experimentation, it appears that the newer
kernel is not compatible with the USB-to-PS2 dongle on the end of the mouse.
I found a different USB-to-PS2 dongle which does work, though.

Very weird.  I can mail you the other dongle if are really interested
in figuring out what broke and fixing it.

Otherwise, things are now working here again after the hardware change.

Cheers

Re: Regression: ps2mouse not working in 2.6.34

[Dmitry Torokhov]

On Monday, June 28, 2010 10:18:35 am Mark Lord wrote:
> On 28/06/10 12:33 PM, Dmitry Torokhov wrote:
> > On Mon, Jun 28, 2010 at 12:04:46PM -0400, Mark Lord wrote:
> >> Okay, who broke it, and how do I re-enable it?
> >> 
> >> The PS/2 mice on my systems here don't do anything with 2.6.34.
> >> One system complains that I need to boot with i8042.nopnp to enable it,
> >> which I also tried, but still nogo.  Same behaviour with or without
> >> /dev/psaux enabled.  64-bit kernel.
> >> 
> >> The other system, running older userspace, hangs at the X-server startup
> >> because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.
> >> 
> >> Both systems working fine with older kernels.
> >> Google finds lots of other people discovering the same problem.
> >> 
> >> What gives?
> > 
> > Well, lest start small: did it work ifor you with 2.6.33? Does kernel
> > discover AUX serio port (dmesg)? What about the mouse itself? Is it
> > absent or is it not reporting events?
> 
> ..
> 
> I started by crawling into the wire nest under the table.  :)
> 
> After a certain amount of experimentation, it appears that the newer
> kernel is not compatible with the USB-to-PS2 dongle on the end of the
> mouse. I found a different USB-to-PS2 dongle which does work, though.
> 
> Very weird.  I can mail you the other dongle if are really interested
> in figuring out what broke and fixing it.

Hmm, let me dig out one of my dongles first and see if it is broken too... If 
not I might be interested in getting yours but no promises - time is tight ;(

Thanks.

-- 
Dmitry

Re: Regression: ps2mouse not working in 2.6.34

[Mark Lord]

On 28/06/10 01:31 PM, Dmitry Torokhov wrote:
> On Monday, June 28, 2010 10:18:35 am Mark Lord wrote:
>> On 28/06/10 12:33 PM, Dmitry Torokhov wrote:
>>> On Mon, Jun 28, 2010 at 12:04:46PM -0400, Mark Lord wrote:
>>>> Okay, who broke it, and how do I re-enable it?
>>>>
>>>> The PS/2 mice on my systems here don't do anything with 2.6.34.
>>>> One system complains that I need to boot with i8042.nopnp to enable it,
>>>> which I also tried, but still nogo.  Same behaviour with or without
>>>> /dev/psaux enabled.  64-bit kernel.
>>>>
>>>> The other system, running older userspace, hangs at the X-server startup
>>>> because it cannot find the mouse.  No i8042 warnings.   32-bit kernel.
>>>>
>>>> Both systems working fine with older kernels.
>>>> Google finds lots of other people discovering the same problem.
>>>>
>>>> What gives?
>>>
>>> Well, lest start small: did it work ifor you with 2.6.33? Does kernel
>>> discover AUX serio port (dmesg)? What about the mouse itself? Is it
>>> absent or is it not reporting events?
>>
>> ..
>>
>> I started by crawling into the wire nest under the table.  :)
>>
>> After a certain amount of experimentation, it appears that the newer
>> kernel is not compatible with the USB-to-PS2 dongle on the end of the
>> mouse. I found a different USB-to-PS2 dongle which does work, though.
>>
>> Very weird.  I can mail you the other dongle if are really interested
>> in figuring out what broke and fixing it.
>
> Hmm, let me dig out one of my dongles first and see if it is broken too... If
> not I might be interested in getting yours but no promises - time is tight ;(
..

I'm beginning to suspect the dongle I was using simply went bad
at the same time I upgraded kernels.  It no longer works with older stuff either.

So.. unfortunate timing of a hardware failure with kernel upgrade.

Nothing to see here.

Thanks Dmitry!